require 'rmagick'

imgl = Magick::ImageList.new
imgl.new_image(300, 200, Magick::HatchFill.new('white', 'LightCyan2'))

gc = Magick::Draw.new

gc.fill_opacity(0)
gc.stroke('red')
gc.stroke_width(3)

# Draw rounded rectangle
gc.roundrectangle(20, 20, 280, 180, 8, 8)

gc.stroke('gray50')
gc.stroke_width(1)

gc.circle(20, 20, 23, 23)
gc.circle(280, 180, 283, 183)

# Annotate
gc.font_weight(Magick::NormalWeight)
gc.font_style(Magick::NormalStyle)
gc.fill('black')
gc.fill_opacity(1)
gc.stroke('transparent')
gc.text(30, 35, "'20,20'")
gc.text(230, 175, "'280,180'")

gc.draw(imgl)
imgl.border!(1, 1, 'lightcyan2')

imgl.write('roundrect.gif')
